You've got a letter from your English friend in which helshe writes that he has caught a cold and describes how he is treating himself. Write a letter to your friend in which tell him:
• tell him/her that you feel sorry for him/her and advise him/her to consult a doctor.
• describe how you felt when you caught a cold last time and what you did to recover.
• give some pieces of advice on how to keep healthy.